Needle hub



FIG. 1 is a perspective side view of a needle hub showing our new design;

FIG. 2 is a right side elevation thereof, the left side being identical in appearance;

FIG. 3 is a front elevation thereof;

FIG. 4 is a rear elevation thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof.

The broken line showing of the needle in FIG. 1 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a needle hub, as shown and described. 